are facing pressure and criticism for alleged cases of sexual abuse. all that comes as pope benedict gets ready to resign on thursday. an estimated 100,000 people were at the vatican for benedict's final appearance is scheduled for wednesday to general audience. >>> the pope might be aging, but he's not as old as this guy. he's 101 years old. we're telling you about him only because he's finally hanging up his competitive running shoes at 101. >> remarkable. he's known as the world's oldest marathoner. yesterday he finished the last ten kilometers of the marathon in hong kong. as far as competing, he says it's time to retire, but he adds he might run again to raise money for charities. he's 101 years old. >> and by the way, he only took up running when he was 89 years old as a way to overcome the death of his wife and son, which happened in quick succession. a runner? >> i'll treadmill at the gym, but that's about it. >> congratulations at doing that at 101, things i can don't at 32. >> makes me think there might be a marathon in my future. >> when you turn 89. >> i'll wait until i'm 89.